[32M] With sudden onset flat, red rash on neck and scalp

What might be happening

Based on the information you have provided, a possible explanation for your symptoms is:

• Contact Dermatitis: This is a common skin reaction that occurs when your skin comes into contact with an irritant or allergen. Given that you recently started using a new shampoo and conditioner, it's possible that one of these products is causing the rash. Contact dermatitis can cause redness, swelling, and sometimes itching or burning, although you mentioned that your rash doesn't itch much.
  • Treatment: The primary treatment for contact dermatitis is to identify and avoid the irritant or allergen causing the reaction. Over-the-counter topical corticosteroids can help reduce inflammation and redness. If the rash persists or worsens, a doctor may prescribe stronger medications.

What you can do

Here are some steps you can take to help alleviate your symptoms and potentially identify the cause:

1. Stop Using the New Products: Discontinue use of the new shampoo and conditioner immediately. This will help determine if they are the cause of your rash.
2. Wash the Affected Area: Gently wash the affected area with mild soap and water to remove any residual product that might be causing the reaction.
3. Apply a Cool Compress: Applying a cool, damp cloth to the rash can help soothe the skin and reduce redness.
4. Use Over-the-Counter Creams: Consider using an over-the-counter hydrocortisone cream to reduce inflammation and redness. Follow the instructions on the packaging.
5. Avoid Scratching: Try not to scratch the rash, as this can worsen the irritation and potentially lead to infection.
6. Monitor Your Symptoms: Keep an eye on the rash and note any changes. If it starts to itch, swell, or blister, or if you develop other symptoms, seek medical attention.
7. Journal Your Symptoms: Use MDandMe to journal your symptoms, track your progress, and get insights. This can be helpful information to share with your healthcare provider.

What you should look out for

Reasons to see a doctor more urgently include:

• If the rash spreads or worsens despite discontinuing the new products.
• If you develop additional symptoms such as fever, chills, or difficulty breathing.
• If the rash becomes very painful, starts to blister, or shows signs of infection (such as increased redness, warmth, or pus).

Remember, while I can provide information and suggestions, it's important to consult a healthcare professional for a formal diagnosis and appropriate treatment. If you have any further questions or concerns, don't hesitate to reach out to a medical provider.